Click here to Skip to main content
11,414,234 members (73,935 online)
Rate this: bad
good
Please Sign up or sign in to vote.
Hi,

In web programming, with the server variable REMOTE_ADDR, you can get the IP address of the user. For example in PHP:
<?php
echo $_SERVER['REMOTE_ADDR'];
?>
The output on the page is the IP address of the user.
But how the server knows the IP address of the user?

Thanks in advance.
Posted 31-Dec-12 0:32am
ProgramFOX150.6K

1 solution

Rate this: bad
good
Please Sign up or sign in to vote.

Solution 1

Certain information about the user is always passed to the webserver when a connection is established. IP Address is one of them.

unless you are in a LAN, its usually the ip-address of the router that gets displayed when visiting public web sites.


hope that helps.

Cheers
  Permalink  
Comments
ProgramFOX at 31-Dec-12 5:49am
   
Thank you!

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
0 Sergey Alexandrovich Kryukov 9,035
1 OriginalGriff 7,387
2 Maciej Los 3,640
3 Abhinav S 3,298
4 Peter Leow 3,084


Advertise | Privacy | Mobile
Web01 | 2.8.150427.2 | Last Updated 31 Dec 2012
Copyright © CodeProject, 1999-2015
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100